route summarization

[dave dave]

hi! I've the following segments

10.10.14.1/24

10.10.15.1/24

10.10.16.1/24

10.10.17.1/24

10.10.18.1/24

10.10.19.1/24

10.10.20.1/24

would this be the most suitable route summary? Thx.

10.10.14.0 255.255.254.0

10.10.16.0 255.255.252.0

10.10.20.0 255.255.255.0

[vijay.swaminathan]

Hi Dave,

the best way to calculate the summary route is by doing binary math calculations.

since the first two octets are same, I will keep them in decimal format and since it changes from the third octet, i will pen them down in binary format.

10.10.00001110.00000001

10.10.00001111.00000001

10.10.00010000.00000001

10.10.00010001.00000001

10.10.00010010.00000001

10.10.00010011.00000001

10.10.00010100.00000001

Performing an AND Operation to find the common digits (in this case the first 19 digits are common)  the network id should be 10.10.0.0/19 and Subnet is 255.255.224.0

HTH

-Vijay

[rizwanr74]

Try this.

10.10.14.1/24 10.10.15.1/24	0.0.1.0
10.10.16.1/24 10.10.17.1/24 10.10.18.1/24 10.10.19.1/24 10.10.20.1/24	0.0.7.0

Hope this helps.

thanks

[dave dave]

How do u derive 1.0 & 7.0 and how do u come out with the final result?

[Joseph W. Doherty · Accepted solution]

Disclaimer

The   Author of this posting offers the information contained within this   posting without consideration and with the reader's understanding that   there's no implied or expressed suitability or fitness for any purpose.   Information provided is for informational purposes only and should not   be construed as rendering professional advice of any kind. Usage of  this  posting's information is solely at reader's own risk.

Liability Disclaimer

In   no event shall Author be liable for any damages whatsoever (including,   without limitation, damages for loss of use, data or profit) arising  out  of the use or inability to use the posting's information even if  Author  has been advised of the possibility of such damage.

Posting

dave dave wrote:
hi! I've the following segments
10.10.14.1/24
10.10.15.1/24
10.10.16.1/24
10.10.17.1/24
10.10.18.1/24
10.10.19.1/24
10.10.20.1/24
would this be the most suitable route summary? Thx.
10.10.14.0 255.255.254.0
10.10.16.0 255.255.252.0
10.10.20.0 255.255.255.0

Correct.